How to enable ssh in ubuntu server?

@thelma.stanton 

To enable SSH on an Ubuntu server, follow these steps:

1. Make sure the openssh-server package is installed on your system. You can check if it is installed by running the following command:

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sudo apt list --installed | grep openssh-server

If the package is not installed, you can install it using the following command:

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sudo apt-get update
sudo apt-get install openssh-server

1. Check if the SSH service is running by running the following command:

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systemctl status ssh

If the service is not running, start it using the following command:

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sudo systemctl start ssh

1. If you want the SSH service to start automatically at boot, you can enable it using the following command:

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sudo systemctl enable ssh

1. By default, the SSH server listens on port 22. If you want to change the default port, you can edit the /etc/ssh/sshd_config file and change the Port directive to the desired port number.
2. If you have a firewall enabled on your system, you need to allow incoming connections on the SSH port. You can do this by running the following command:

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sudo ufw allow ssh

1. Once you have completed these steps, you should be able to connect to your server using an SSH client such as PuTTY or OpenSSH.